Burglar-alarm.



W. H. REIFP.

BURGLAR ALARM.

I APPLICATION FILED FEB. 25, 1911. v 1,016;034. Patented Jan. 30, 1912.

COLUMBIA PLANOURAPH cc., WASHINGTON, n. c.

UNITED STATES PATENT OFFICE.

WILLIAM H. REIFF, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR 0F ONE-HALF TO WILLIAM L. R. CLIME, OF BURLINGTON, NEW JERSEY.

BURGLAR-ALARM.

Specification of Letters Patent.

Application filed February 25, 1911.

To all whom 2'25 may concern Be it known that I, WILLIAM H. REIFF, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain new and useful Improvement in Burglar-Alarms, of which the following is a specification.

My invention relates to new and useful improvements in burglar alarms and has for its object to provide an exceedingly simple and effective device of this description which will not only act as a burglar alarm but will serve as a door fastener and has a torch which will illuminate the room when the alarm is set off. 4

With these ends in view, this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, I will describe its construction in detail, referring by letter to the accompanying drawing forming a part of this specification, in which- Figure 1, is a side elevation of my improvement. Fig. 2, a plan view thereof. Fig. 3, a section at the line mm of Fig. 2. Fig. 4c, a front view, and Fig. 5, a view of a detailed perspective of the hammer.

In carrying out my invention as here embodied, (1) represents a casing which is made in two sections and riveted or secured together by suitable screws, which casing is wedge shaped as clearly shown, so that the pointed end thereof may be slid under the bottom of a door and the pins 2 are forced into the floor so as to hold the device in place. Between the side walls of the easing is pivoted the hammer 3 at 4 and this hammer is cut away as indicated at 5 so as to form the shoulder 6, which latter is adapted to be engaged by the trigger 7 when the hammer is drawn into the position shown in dotted lines in Fig. 3. The trigger is formed integral with the trip plate 8 which is pivoted between the side walls of the casing at 9 and is normally held in its elevated position by the spring 10, one end of which is riveted to the trip plate at 11 while the other end bears upon the stud 12 projecting from one of the side walls. This arrangement will hold the hammer in its elevated position until the trip plate is depressed as will be hereinafter set forth.

13 is a coiled spring, one end of which is attached to the stud 12 while the opposite end is attached to the heel 14 of the hammer and acts to throw the hammer forward when released by the trigger 7 15 is a bore formed in the casing for the reception of a cartridge, and I also provide a bushing 16 which may be fitted in this bore for the reception of a smaller cartridge, thus permitting the use of either of two sizes of cartridges as may be desired.

17 is a torch holder pivoted at 18 to one side of the casing and adapted to receive a number of matches indicated at 19, the heads of which will project in the path of the off-set 20 formed upon the hammer, so that when the hammer is drawn forward by the spring 18, the roughened surface of the ofi-set 20 will rub against the heads of the matches and ignite the same, which will burn for a suflicient time to permit the occupant of the room to prepare-to resist the intruder.

In practice the pointed end of the device is placed just under the edge of the door and any attempt to open the door will depress the trip plate 8, thereby freeing the hammer from the trigger 7 and'permit said hammer to spring forward and explode the cartridge by the firing pin 21 striking the cap of said cartridge, or the hammer may be arranged for firing a rim cartridge. This forward movement of the hammer just explained, will ignite the torch.

A safety plate 22 is pivoted at 23 so as to be swung into the path of the hammer when it is desired to set the device at safety, and when this is done the hammer cannot explode the cartridge, thus permitting the cartridge to remain in the device, which is especially advantageous to persons traveling and carrying the device in a satchel.

In many cases the torch will be suficient warning without the use of a cartridge and in such cases the cartridge would'be omitted when the device is set for operation.

The torch holder being pivoted may be swung sidewise out of the way when it is not desired to use the same and reliance is placed entirely upon the cartridge.-

Of course I do not wish to be limited to the exact details of construction as here shown, as these may be varied within the limits of the appended claims without departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new and useful, is-- 1. In a burglar alarm a casing, the side walls of which are produced wedge shaped, said casing carrying means for holding an alarm device, a hammer provided with a projection at one side and having a heel formed therewith pivoted between the side walls of the casing, a stud formed integral with one of the side walls of the casing, a helical spring, one end thereof fastened to said stud and the other end to the heel of the trigger, a trip plate pivoted between the side walls of the casing adjacent their smallest ends, a flat spring carried by the trip plate engaging the stud for normally holding the trip plate beyond the edges of the side walls, and a trigger formed integral with the free end of the trip plate adapted to engage the projection formed with the hammer for holding said hammer in a retracted position.

2. In a burglar alarm, a casing having wedge shaped side walls, said casing carrying means for holding an alarm device, a hammer pivoted between the side walls of the casing, a projection formed with one side of said hammer providing trigger engagement means, a heel carried by the hammer lying midway between the side walls of the casing, a stud formed integral with one of the side walls of the casing, the free end of said stud abutting the opposite wall, a helical spring, one end thereof fastened to said stud and the other end to the heel of the trigger, a trip plate approximately the same width as the space between the side walls pivoted between said side walls adjacent their smallest ends a fiat spring secured to the free end of the trip plate, the free end of said spring engaging the stud for normally holding the trip plate beyond the edges of the side walls and a trigger formed integral with the free end of the trip plate at one edge thereof, projecting forwardly beneath the projection formed with the hammer, said trigger adapted to engage said projection formed with the hammer for holding said hammer in a retracted position.

In testimony whereof, I have hereunto affixed my signature in the presence of two subscribing witnesses.

WILLIAM H. REIFF.

Witnesses EDWARD W. ANSTICE, M. E. Yos'r.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). G. 

